基于业务认知的多用户带宽分配方法  

Multi-user bandwidth allocation method based on traffic cognition

作　　者：张耀东[1] 王钺[1] 霍金海[1] 袁坚[1] 

机构地区：[1]清华大学电子工程系,北京100084

出　　处：《通信学报》2013年第2期109-116,共8页Journal on Communications

摘　　要：无线局域网的MAC协议难以兼顾多用户差别的业务需求和网络吞吐量的有效性。建立具有超帧结构的带宽分配模型和具有惩罚函数的优化目标,计算满足单用户QoS需求的最小带宽,进而提出基于业务认知的多用户带宽分配算法(TCBAA)。该算法优先满足用户QoS要求,其次最大化系统的吞吐量。理论和仿真实验显示:相比于固定分配机制和最大吞吐量分配机制,TCBAA能够在有限带宽下满足更多用户的QoS需求。Wireless LAN MAC protocols can hardly make a balance between diverse traffic requirements of multi-users and network throughput efficiency. A bandwidth allocation model with super-frames and an optimization goal with a pen- alty function was established. After calculating the minimum bandwidth satisfying a single user＇s QoS requirement, traffic cognition bandwidth allocation algorithm （TCBAA） for multi-users was proposed. Analysis and simulations experiment show that TCBAA can satisfy more users＇ QoS requirements under limited bandwidth resources, compared with fixed bandwidth allocation and maximum throughput allocation.

关 键 词：MAC调度 业务认知 服务质量 带宽分配 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]